Senior Notes and Other Long-Term Debt - Additional Information (Detail) (USD $)	6 Months Ended					6 Months Ended		6 Months Ended
	Oct. 03, 2014 Revolving credit facility [Member]	Apr. 04, 2014 Revolving credit facility [Member]	Oct. 03, 2014 Letter of credit [Member]	Feb. 27, 2012 Initial 2020 Notes [Member]	Oct. 12, 2012 Additional 2020 Notes [Member]	Oct. 03, 2014 2020 Notes [Member]	Apr. 04, 2014 2020 Notes [Member]	Oct. 03, 2014 2020 Notes [Member] Early Period Redemption [Member]	Oct. 03, 2014 2020 Notes [Member] Debt Instrument, Redemption, Period One [Member]	Oct. 03, 2014 2020 Notes [Member] Debt Instrument, Redemption, Period Two [Member]	Oct. 03, 2014 2020 Notes [Member] Debt Instrument, Redemption, Period Three [Member]	Oct. 03, 2014 2020 Notes [Member] Debt Instrument, Redemption, Period Four [Member]	Oct. 03, 2014 2020 Notes [Member] Change of control [Member]
Debt Instrument [Line Items]
Credit Facility maximum borrowing capacity	$ 500,000,000		$ 150,000,000
Maturity date of the Credit Facility	Nov. 26, 2018
Credit Facility interest rate description	Borrowings under the Credit Facility bear interest, at the Company’s option, at either (1) the highest of the Federal Funds rate plus 0.50%, the Eurodollar rate plus 1.00%, or the administrative agent’s prime rate as announced from time to time, or (2) the Eurodollar rate, plus, in the case of each of (1) and (2), an applicable margin that is based on the Company’s total leverage ratio.
Weighted average effective interest rate on the Company's outstanding borrowings under the Credit Facility	2.41%
Credit Facility revolving credit description	The Credit Facility contains financial covenants regarding a maximum total leverage ratio and a minimum interest coverage ratio. In addition, the Credit Facility contains covenants that restrict, among other things, the Company's ability to sell assets, make investments and acquisitions, make capital expenditures, grant liens, pay dividends and make certain other restricted payments.
Borrowing availability under the Credit Facility	321,100,000
Standby letters of credit outstanding amount	38,900,000
Principal amount of outstanding borrowings under the Credit Facility	140,000,000	105,000,000
Principal amounts of Senior Notes issued				275,000,000	300,000,000	575,000,000	575,000,000
Original issue premium of Senior Notes					103.50%
Interest rate at which Senior Notes bear interest						6.875%
Senior Notes due date						Jun. 15, 2020
Unamortized premium on the 2020 Notes					$ 10,500,000	$ 8,268,000	$ 8,861,000
Redemption price percentage of Senior Notes								106.875%	100.00%	103.438%	101.719%	100.00%	101.00%
Redemption description of Senior Notes								Prior to June 15, 2015, the Company may redeem up to 35% of the 2020 Notes at a redemption price of 106.875% of the principal amount thereof, plus accrued and unpaid interest, if any, thereon to the redemption date, from the net cash proceeds of specified equity offerings.	The Company may also redeem the 2020 Notes prior to June 15, 2016, in whole or in part, at a redemption price equal to 100% of the principal amount thereof plus the applicable premium and any accrued and unpaid interest, if any, thereon to the redemption date. The applicable premium is calculated as the greater of: (i) 1.0% of the principal amount of such 2020 Notes and (ii) the excess, if any, of (a) the present value at such date of redemption of (1) the redemption price of such 2020 Notes on June 15, 2016 plus (2) all required interest payments due on such 2020 Notes through June 15, 2016 (excluding accrued but unpaid interest to the date of redemption), computed using a discount rate equal to the treasury rate (as defined under the indenture) plus 50 basis points, over (b) the then-outstanding principal amount of such 2020 Notes.	The 2020 Notes may be redeemed, in whole or in part, at any time during the twelve months beginning on June 15, 2016 at a redemption price of 103.438%	During the twelve months beginning on June 15, 2017 at a redemption price of 101.719%	And at any time on or after June 15, 2018 at a redemption price of 100%, in each case plus accrued and unpaid interest, if any, thereon to the redemption date.	In the event a change of control occurs (as defined in the indenture), each holder will have the right to require the Company to repurchase all or any part of such holder's 2020 Notes at a purchase price in cash equal to 101% of the aggregate principal amount of the 2020 Notes repurchased plus accrued and unpaid interest, if any, to the date of purchase (subject to the right of holders of record on the relevant record date to receive interest due on the relevant interest payment date).